Ultracold atoms in optical lattices with random on-site interactions.

  title={Ultracold atoms in optical lattices with random on-site interactions.},
  author={Heiko Gimperlein and Stefan Wessel and J{\"o}rg Schmiedmayer and Luiz Santos},
  journal={Physical review letters},
  volume={95 17},
We consider the physics of lattice bosons affected by disordered on-site interparticle interactions. Characteristic qualitative changes in the zero-temperature phase diagram are observed when compared to the case of randomness in the chemical potential. The Mott-insulating regions shrink and eventually vanish for any finite disorder strength beyond a… CONTINUE READING